“…• Arctic curves in the six-vertex model with HTBC and η = 0 (DWBC with half turn symmetry [29]) are found to be, in the thermodynamic limit, the lower half of the known arctic curves [18,19] with DWBC, in all the cases we examined (∆ = 0, ∆ = −2, b = a, b = 2a). The same is true at ∆ = 0 for the vertical As a future perspective, it would be natural to investigate what is the more general class of boundary conditions that lead to the same arctic curves in the thermodynamic limit as DWBC.…”